

#d4{
    width: 100%;
    height: 560px;
}

.d4all{
    float: left;
    position: relative;
    bottom: 50px;
    width: 30%;
    height: 400px;
}
.d4back{
    float: left;
    position: relative;
    bottom: 0px;
    width: 100%;
    height: 400px;
}
#d4b-1{
    background-image: url("../../images/主页/主页展示3.png");
    background-size: 400px;
    background-position: -20px -60px;
    opacity:50%;
}
#d4b-2{
    background-image: url("../../images/主页/关于我们.jpeg");
    background-size: 380px;
    background-position: 0px 0px;
    opacity:50%;
}

#d4-1{
    position: relative;
    bottom: -60px;
    left: 150px;
    background: white;

}
#d4-2{
    position: relative;
    bottom: -60px;
    left: 335px;
    background:aquamarine;

}
.d4t{
    color: #333333;
    text-decoration: none;

}
.d4t:hover{
    color: #111111;
}